Noughts and Crosses by Malorie Blackman

Very good science fiction!It very thought provoking and very hard to put down, I was constantly reading this!It is set in the future or an ulternate history (it isn't stated in the novel)when instead of europeans being the dominant race, the afro americans have taken over. It is very similar to the racisim and discrimination that was present between the europeans and afro americans but reversed. I throughly enjoyed it and recommend anyone interested in science fiction!